Ore crushing and screening mill.



PATENTED' APR. 2, .1'9 07.,

J. ALGERT. ORE GRUSHING'AND SCREENING MILL.

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APPLIOATION FILED SEPT. 17. 1906.

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- PATENTED APR. 2, 1907.

J. ALGERT. ORE GRUSHING AND SCREENING MILL.

APPLICATION FILED SEPT.17.1906

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No 849,037. PATENTED APR. 2,1907. J. ALGERT.

ORE GRUSHING' AND SCREENING MILL.

APPLICATION PILED'SEPT.17. 1906.

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J. ALGERT. ORE ORUSHING AND SCREENING MILL.

APPLIOATION FILED SEPT. 17.1906.

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gr 7 w No. 849,037. PATENTED APR. 2. 1907.

J. ALGBRT. 3

ORE'ORUSHING AND SCREENING MILL. APPLICATION FILED SEPT.17. 1906.

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J. ALGERT. ORB GRUSHING AND SCREENING MILL. v

APPLICATION FILED SBPT.17. 1906.

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JOS EPH ALGERT, OF DENVER, COLORADO.

ORE CRUSHING AND SCREENING IVIILL.

Specification of Letters Patent.

Eatented April 2, 1907.

Application filed September 17, 1906. Serial No. 334,925.

To all whom it may concern:

Be it known that I, JOSEPH ALGERT, a citizen of the United States of America, residing at the city and county of Denver and State of Colorado, have invented a new and useful Roller Ore Crushing and Screening Mill, of which the following is a specification.

My invention relates to improvementsin roller ore crushing and screening mills; and the objects of my invention are, first, to pro vide a vertically-rotating head, body, or ring provided with a fixed ore-crushing die-ring and with a pair of loose rollers arranged to roll freely on the tread of the die-ring, said ring having a closed integral back flanged portion and a renewable front flange side, made in two parts, its central part being stationary and the peripheral part rotating with the ring, and one of the most important features of my invention is to form a waterjoint between the stationary and the rotating parts of the removable front flange, so that in wet-ore crushing a body of water may be kept in the lower portion of the ring without leakage; second, to provide an ore-crushing mill in which the ore is screened in a flat reciprocating screen which passes the sized ore to the feed-hopper of the ring; third, to provide an orecrushing mill in which dry or wet ore may be rapidly sized and screened and in which the top portion of the ring is subjected to a continuous et of water inder sufficient pressure to keep wet ore from packing on the tread of the diering and thereby forming a tightly-packed layer or cushion of pulverized ore on which the rollers run, which decreases to a very large percentage the capacity of the rollers and die-ring from what their capacity is when the tread of the die-ring and the peripheries of the small rollers are not kept clear of packed ore; fourth, to provide a jet of compressed air that is arranged to be discharged against the upper portion of the tread of the die-ring with force enough to dislodge and remove from it any crushed ore that packs on it during the crushing of dry ore fifth, to provide means for continuously screening the crushed and pulverized ore that is continuously fed into the ring and is crushed on the tread-ring by the rollers and for returning the oversize to the die-ring and its crushingrollers, and, sixth, to provide a simple, durable, and large-capacity ore-crushing mill in which two loose rollers run edge to edge on the inner periphery of a vertically-arranged die-ring having either a water or air jet of force enough to and directed to keep said treadsurface and the peripheral surfaces of said rollers clean as the ore is crushed wet or dry. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a front elevation of my improved ore crushing and screening mill. Fig. 2 is a plan view of the same. Fig. 3 is a side elevation thereof. Fig. 4 is a vertical sectional view on the line 4 4 of Fig. 2. Fig. 5 is a vertical sectional view on the line 5 5 of Fig. 2. Fig. 6 is a rear view of the front plate or ring of the mill, showing the divided splash plate and ring in position therein. Fig. 7 is a perspective view of one of the bridge-plates which support the splash plate i and ring in a stationary position within the front plate or ring of the mill; and Fig.8 is a perspective view of a discharge-chute, which is secured to the rear side of the upper splashplate and which conveys the pulverized ore from the interior of the mill.

Similar letters of reference refer to similar parts throughout the several views.

Referring to the drawings, the numeral 1 designates the formdation-supporting frame of my ore-crusher. This frame is made of wooden timbers strongly framed and bolted together. This frame is of rectangular form, and upon it I securely bolt a cast frame, which consists of the end pieces 2 and 3, which are bolted to cast side pieces 4 and 5. The lower ends of each of these side and end pieces are provided with foot-flanges 4 and 5 which. are bolted to the timber frame by bolts 1. The end and side castings 2, 3, 4, and 5 are bolted together at the corners by the bolts 5, and these four side and end castings form the supporting-frame of my orecrushing mill. The side castings 4 and 5 of the supporting-frame contain journal-boxes 6, in which are journaled a shaft 7, that extends across the frame and beyond its boxes a short distance, and upon one end of this shaft a pair of tight and loose driving-pulleys 8 and 8, respectively, are mounted. Upon the opposite end of this shaft 7 a pulley 9 is placed, from which a belt extends to a pulley 10, which is secured on the end of a shaft 11 which is journaled in brackets 12, that are secured to the side casting 3 of the supporting-frame. Upon the shaft 7 I mount and secure a head or ring 12*, which I term the mill head or ring, as it forms the body of the ore-crushing member of my mill, and it consists of a ring-shaped peripheral portion 12, which has an integral closed and solid flanged portion 12, that extends entirely across it and forms a back wall, and it is provided with a projecting hub portion 12, that contains one or more keyways and keys that are also inserted in the shaft. On the opposite end of the mill-head a projecting annular flange 12 is formed, to which I bolt a side flange-ring 14, which I term the mill-head flange, and which consists of a narrow side flange-ring that forms a trough in the peripheral rim portion of the millhead, and between this mill-flange and the edge of the mill-head ring I insert in a circumferential groove 14 a packing 14 which prevents leakage of the water from the millring. The inner edge of this flange-ring is formed to project outwardly both on its out Ward and on its inward sides at a diverging angle, which forms a splash-surface on its inside, while it terminates in an inwardlycurved hook 15, which acts to stop the splash of the water and ore-pulp in the trough of the mill, as will be more fully explained herein- I after.

Upon the shaft 7 I loosely mount a plate or flange, which I term a splash-plate. This splash-plate is made of a diameter to fit closely but loosely in the inner peripheral edge of the splash-ring, and it is made in two halves 16 and 16, which I designate as the lower and upper splash-plates. These splash-plates are rigidly but removably secured to the right and left cross-arms 17 and 18, which together form a saddle. These arms are bolted to the opposite sides of the frame and are vertically adjustable for a short distance by means of cap-screws 18, which are threaded to horizontal members of substantially U-shaped stirrups 19, formed on the inner sides of the side plates of the frames and bear against the bottoms of the opposite ends of the arms which lie within the said stirrups.

In addition to the vertical adjustment of the saddle I also provide them with a horizontal adjustment by threading horizontal cap-screws 18 through the vertical members of the stirru which bear against the sides of the ends of the saddlesf Check-nuts are placed on all of these cap-screws to secure them in adjusted positions against accidental displacement.

The vertical and horizontal adjustment of the saddle and splashplates is necessary to adjust the splash-plates and the splash-ring in proper rotative relation to the hooked end of the flange-ring of the mill-body. These arms extend from the opposite sides of the frame and meet end to end around the main shaft, each arm being provided with a recess 18 in its end, which permits it to partially surround the shaft and permits its ends to practically abut against each other over the shaft.

The lower splash-plate is provided with inwardly-projecting ribs 20, which project close to the vertical plane of the adjacent edge of the tread-ring and form a confining side wall for the ore-crushing rollers 21. A bracebar 21 is secured at one end to the lower splash-plate and at its other end to the front plate 1 of the supporting-frame of the mill. This bar prevents the splash-plate from being forced outward by the lateral movement of the rolls, and it may be adjusted to correspond to the adjustment of the saddle and splash-plate by clamping-bolts 21 and an adjusting-bolt 21. The lower splash-plate is also provided with an oversize-feedingin aperture 22 and spout 23.

The upper splash-plate is provided with a pair of hand-hole apertures 24, to which are bolted covers 25, and at the top of the plate a discharge-aperture 26 is formed, to the inside of which a discharge pan or spout 27 is secured by bolts 28. This discharge-spout is bolted to the inside of the upper splash plate around the discharge-aperture 26 and projects into the interior of the mill-body in a position to catch the pulverized ore-pulp as it is carried over by the rotating mill and discharge it through the discharge-aperture of the upper splash-plate, and on the outside of the splash-plate around the dischargeaperture a spout 28 is secured by bolts, and this spout extends over the front end of a shaking-screen 29, and this spout receives the ore-pulp from the discharge-aperture and discharges it onto the head end of the screen 29, which is arranged at right angles to the axis of the ore-crushing mill and is independ ent of it, as will be hereinafter described. The upper splash-plate is also provided with an aperture 29 through which a water-supply pipe or hose 30 may be extended into the interior of the mill.

The inner periphery of the millring is lined throughout its circumference with wooden wedges, which form a slot for an orecrushing die-ring 31, which is inserted in the mill-ring and is rigidly secured centrally in the mill-ring and as close to its inner periphery as it can be placed by the circle of wooden wedges, and the ore-crushing rollers 21 rest loosely on and roll on the inner peripheral surface of this die-ring. I preferably employ two of these ore-crushing rollers. and they bear against each other when the mill is not rotating, and they roll in bearing contact and jump and knock together as the mill rotates and are confined in a vertical position on the tread of the die-ring by the flange-wall of the mill-ring and the faces of the inwardly-projecting ribs of the lower splash-plate.

To the inner peripheral edges of the two -IIO half splash-plates, which together form a circular flange or splash-plate disk, I secure a ring 32, whichI term the splash-ring. This splash-ring is divided into two halves, and the halves are bolted to the inside faces of the peripheral edge of the two splash-plates, and this splash-ring is of larger diameter than these splash-plates, and its side that faces the splash-plates is provided with a curved recess 33, which fits loosely, but closely, over and around the hook end 15 of the mill-body flange. This splash-ring and the splash-plates are stationary, being secured to the saddle that is formed by the two end-to-end arms; but the mill-body and ring and the mill-body flange with its hook end rotate with the main driving-shaft, to which the mill-body is secured. Upon the side casting 2 of the supporting-frame I secure one end of a pair of vertically-extending brackets, which contain journal-bearings 335 in their upper ends, in which a shaft 34 is rotatably journaled Upon this shaft I mount one of the ends of a pair of arms 35, securing them to the shaft preferably by setscrews. These arms 35 extend vertically upward above the shaft, and their upper ends are secured to and support a hopper 36. Beneath the lower endof this hopper is a feed-pan 37, the discharge end of which is positioned directly over the head end of the screen. This hopper is provided with a feedgate 36, which is slidably adjustable on a hand-wheel screw 36 that extends through a slot 36 in the gate and threads into the side of the hopper. This gate extends down into and across the pan and its upper edge is provided with a hand-lifting portion 36 An arm 38 is mounted loosely on the shaft 34 and its upper end is secured to the bottom of the feed-pan and supports it. The lower end of this feed-pan rests loosely on top of a plate 38, which is secured to the head end of a screen-pan 39 and projects slightly above it. The lower end of the arm 38 depends below the shaft 34 and is confined in a yoke 38 by a hand-wheel-operating screw 40, and a spring 40 is interposed between the other sides of the depending end of the rockarm and the end of the frame opposite the hand-screen, which is threaded through the yoke and bears against the lower end of the arm, and the spring forms with the handserew an adjustment for the rock-arm and for the feed-pan. On the shaft 34 one of the ends of a pair of arms 41 are mounted, the opposite ends of which are pivotally mounted on a shaft 42. On the shaft 42 one of the ends of a pair of arms 43 are mounted, the opposite ends of which are secured to the screen-pan 39. The opposite end of this pan is secured to one of the ends of a pair of arms 44, the opposite ends of which are pivotally secured to a shaft 45. This screenframe consists of two pairs of Wooden strips,

one pair consisting of the strips 29 and 29 and the other pair consisting of the strips 29 and 29 and the cross-strips 30". The two pairs of strips form the sides of the screen-frame and rest on the bottom of the screen-pan along its sides, and the screencloth 29 is clamped and secured between the two strips of each side by nails or screws.

The shaft 45 is supported at one of the ends of a pair of arms 46, which depend from a shaft 47, and by one end of an arm 48, which depends from the shaft 11. The shaft 47 is journaled in bearings 50, formed in the brackets 12, that are secured to the side casting 5 of the supporting-frame of the mill. The opposite sides of the pan adjacent to its end portions are provided with vertical clips 52, which extend slightly above its sides and above the sides of the screen-frame, and apertures are formed in the top ends of the clips, and through these apertures across the screen pan and frame I extend rods 54,

which are positioned high. enough above the sides of the screen-frame to permit wooden wedges to be inserted between them and the top edges of the side pieces of the screenframe. The shaft 11 is provided with suitable set-screwed collars 56, which are positioned at the sides of its supporting-journals. The opposite end of the arm 48 is rotatably mounted on an eccentric 57, which is adjust ably secured to the shaft 11 by a set-screw 11 and as the shaft 11 rotates the eccentric imparts an oscillating reciprocating vertical swinging movement to the screenframe through the medium of the arm 48, the arms 43 and 44 at the opposite ends of the screen, and the swinging arms 41 and 46, by which it is pivotally suspended from the shafts 34, 42, 45, 47, and 11. Through the bottom of the screen-pan close to its discharge end a discharge-aperture 58 is formed, which registers over a spout 59, that extends over one end of a conveying discharge-spout 59 the opposite end of which projects beyond the frame of the machine and conveys the screened product away from the mill. The oversize material that will not pass through the screen feeds off of its discharge end into one end of the spout 23, the opposite end of which is secured around the aperture 22 of the lower splash-plate, and the oversize screen material flows through this spout into the mill and falls back of the crushing-rolls onto the die-ring.

A water-supply pipe 62 is connected at one end to a supply of water under pressure, and the pipe is positioned in front of the upper splash-plate and is provided with a valve 63. Below the valve the pipe enters the aperture 29 in the top of the upper splash-plate and is connected to a discharge-nozzle, which comprises a nipple portion 64, having a cap 65, threaded or otherwise secured to its opposite end, and along the nipple a narrow waterdischarge slot 66 is formed, which is positioned to discharge a long thin jet of water at an upward angle of preferably about fortyfive degrees against the inner peripheral surface of the die-ring. The water-jet discharging from the nozzle should have suflicient pressure to dissolve and dislodge any ore that sticks or packs on the die-ring asit rotates. A branch pipe 67, which is provided with a valve 68, extends from the watensupply pipe to the screening oversize spout 23, and a continuous supply of water is kept flowing from it into this spout to wash the oversize screening into the mill.

The operation of my improved mill is as follows: The tight and loose pulleys 8 and 8 are connected by bolts to a power-driven pulley and shaft, and the ore-crushing mill is rotated at preferably about seventy-live to one hundred revolutions per minute, and power is transmitted to the shaft 11 by a belt 9 and pulleys 9 and 10, and ore of a size ranging from small to medium size lumps directly from rock-breaking machinery or from an ore-bin is fed into the hopper 36,

from which it falls into the feed-pan and is fed onto the screen, the volume of ore fed being regulated by the gate 36, which is raised or lowered to and from the bottom of the pan. The screen is reciprocated with a vertically-reciprocating movement by the eccentric 57 on the shaft 11, and a slight vertical jar or bump is imparted to the feed-pan by the screen through the medium of the upwardly-projecting plate 38 of the screen, which strikes the bottom of the pan and raises it on one reciprocative stroke as the screen reciprocates and allows the pan to fall on and with the plate on its opposite stroke, and the reciprocating movement of the screen feeds the ore across it, and such portion of it as is fine enough to pass the screen, which is generally from about twenty to eighty mesh, falls into the screen-pan and works along it to the discharge-aperture in its bottom, from which it discharges into the dischargespouts 59 and 59, by which it is conveyed away from the machine, and that portion of the ore that is too coarse to pass through the meshes of the screen will feed over its surface and will discharge into the mill-heads spout 23 and is washed by the water from the water-supply pipe 67 through this spout into the mill-ring. Consequently the ore product that flows to the mill is the oversize of the screen. The mill rotates in the direction of the arrow, and as the ore flows intoit it falls back of the crushing-rolls, which naturally roll up the side that is moving vertically upward a short distance onto the die-ring, and as the mill rotates the crushing-rolls roll on the die-ring, and as they are very heavy and the mill is rotated very fast they crush and granulate and pulverize the ore.

My improved mill is adapted to screen and pulverize ore either in a wet or dry state, and when pulverizing ore wet a sufiicient supply of water is kept constantly flowing into the mill feed-spout, and a supply of water under pressure is constantly discharged by the water-supply pipe 62 and 30 against the inner periphery of the die-ring at its top and washes from its tread any crushed or pulverized ore that has passed under the crushingrolls and has adhered to it, and this Washedoff ore with the jet of water falls into the inner discharge-spout 27 and is washed through the outside discharge-spout and discharges onto the head end of the screen and is rescreened, and its oversize is again returned to the crushing-mill, while such portion of it as is fine enough is screened and fed away from the machine. As the water flows continuously into the crushing-mill through water-feed pipe a body of water soon accumulates in the mill, and the flow of water is regulated to maintain this body of water at sufficient volume within the mill to crush the ore to an ore-pulp, which is finely-pulverized ore mixed with sufhcient Water to form a flowing stream, and this ore-pulp is continuously carried up and over the top of the millring by speed and centrifu al force, and a portion of it falls into the inner dischargespout and flows out through it and the outer discharge-Spout onto the screen and again is rescreened, and the screen product is carried out of themachine through the discharge-- spouts 27 and 28 and its oversize is discharged from the end of the screen into the crushing-mill feed-spout and is returned to the mill and is recrushed, reground, and pulverized, and the stream of ore-pulp that is kept feeding into the hopper and feed-pan at the head of the screen is screened, crushed, ground, and pulverized, and rescreened and recrushed, reground, and repulverized until it all passes through the screen and is discharged from the machine. The hooked joint between the mill-body flange and the splash-plates and the splash-ring makes a practically watertight joint, as the ore-pulp when'splashing against the side of the millbody flange-ring strikes its hooked end and falls back into the bottom of the body of the ore-crushing mill. When screening and crushing dry ore, the operation is the same, except a supply of air under pressure is connected to the water or air inlet pipe 62 and j et-nozzle 64, and, if desired, air may be discharged from the pipe 67 into crushing-mills feed-spout and assist in feeding the dry ore into the crushing-mill.

My invention is simple, durable, practical, water-tight, and is of large capacity and very effectually crushes, grinds, and pulverizes and screens and sizes ore to any predetermined size.

v Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an ore crushing and screening mill, a rotatable head having a flange on one side and a hub on the other side, a removable flanged-shaped ring attached to its opposite side having an introverted hooked-shaped inner peripheral edge, a divided circumferential ring having a recess-face fitting around said curved hooked end of said flange-ring, a shaft eXtendin through the hub of said flanged portion and means for supporting said divided flanges and said divided circumferential ring in a rotatably substantially watertight joint on said hooked inner peripheral edge of said flange-ring.

2. In an ore crushing and screening mill, the combination of a supporting-frame, a rotatable head having a flange on one side and a hub on the other side, a shaft supported in said frame and secured to said hub, and means for rotating said shaft, with the ring secured to said head and provided with a curved hooked-shaped inner peripheral edge, a saddle extending across said frame, a flange secured to said saddle and fitting the inner peripheral edge of said flange-ring, and a ring secured to said flange and provided with a curved recess arranged to fit over said hooked end of said curved hook-ring with a close but rotatable joint.

3. In an ore crushing and screening mill, a rotating ore-crushing head having a flange at one side, a shaft upon which said head and flange are secured, means for rotating said shaft and head, a detachable narrow flangering secured to the opposite edge of said orecrushing ring, a fixed flange fitting in the inner. periphery of said flange-ring, and a water-tight joint formed between the inner peripheral edge of said flange-ring and the periphery of said center side flange, said water tight joint being arranged to permit said flange-rings inner periphery to rotate on said center flange.

4. In an ore crushing and screening mill, the combination with the supporting-frame, provided with a rotatable shaft, of a rotating head mounted on said shaft, a ring-shaped flange secured to said rotating head provided with an introverted curved inner end, a divided stationary flange fitting around said shaft and arranged to close the opening with in said ring-shaped flange, and a divided ring secured to said stationary flange and arranged and adapted to form a water-tight joint between said stationary flange and the ring-shaped flange of said rotating head.

5. In an ore crushing and screening mill, the combination with the supporting-frame, the driving-shaft, the mill-head secured to said shaft, the flange-ring, the splash-plates, and means including a ring connected with the inner periphery of said flange-ring, and the outer peripheral edge of said splashplates, for making a water-tight rotative journal-joint between said flange-ring and said splashplates.

6. In an ore crushing and screening mill, the combination of the supporting-frame, the mill-head rotatably mounted thereon, provided with a flanged ring having an introverted curved inner peripheral edge, the splashplates arranged with said flange-ring to form the opposite side of said mill-head, means including an adjustable support for adjusting said splash-plates, concentric to said flange-rings inner peripheral edge, a divided ring secured to said splash-plate, a curved recess on said divided ring adapted to fit over said curved hook on said flange-ring, and to permit said flange-ring to rotate in said recess and arranged and adapted to form a water-tight joint and rotatable bearing between said flange-ring and said splash-plates, an ore-crushing die-ring secured in said millhead, a pair of rolling disk ore-crushing mullers rollingly and operatively seated on said die-ring within said mill-head.

7. In an ore-crushing mill, the combination of the supporting-frame, the drivingshaft journaled therein, means for rotating said shaft, the mill-head ring secured to said driving-shaft, the flange-ring secured thereto, the stationary splash-plates, means connected to said frame and including a vertical and horizontal adjustable support for concentrically adjusting said splash-plates, means including a ring connected with said splash-plates for forming a water-tight joint between said flange-ring andsaid splashplates, the disk-ring in said mill-head, the disk roller-mullers on said die-ring, a waterinlet aperture in the top portion of said splash-plates, a water-supply pipe extending into said water-aperture, a water-jet-discharging nozzle connected to said watersupply pipe and arranged to discharge a jet of water against the roller disk tread portion of said die-ring.

8. In an ore crushing and screening mill, rotatable vertical mill-head, having sides, a portion of one of which sides is non-rotatable, an ore-crushing die-ring in said mill-head, ore-crushing rollers loosely mounted on the inner periphery of said diering, means including a pipe for feeding water under pressure to the inner periphery of said die-ring, means including an inlet-aperture in the nonrotatable one of said ring sides, for feeding ore and water into said mill-ring to said diering and rollers, an ore-pulp-discharge aperture in said non-rotatable side of said millhead, an ore-pulp spout within said millhead connected to said aperture and arranged to discharge crushed ore-pulp from said mill and die-rings and rollers and a reciprocating screen arranged to receive the discharged crushed ore-pulp from said m.ill-head.

9. In an ore crushing and screening mill, the combination of the mill-head, provided with an operatively-arranged die-ring and roller disk mullers, the removable non-rotatable central side portion of said mill-head, the flange-ring secured to said mill-head and provided with the inwardly-curved hook, the splash-ring secured to said non-rotatable central side portion of said mill-head and fitting around said hooked end of said flangering, the fluid-pipe and discharging-nozzle arranged to discharge water against said diering, an ore-pulp-inlet feeding and a discharge-outlet in said non-rotatable side of said mill-head, a discharge-spout within said mill-head connected to said discharge-outlet, means for feeding ore through said ore-inlet, a reciprocating screen arranged adjacent to said mill-head, a hopper arranged to feed ore to said screen, a discharge-spout extending from said discharge-outlet of said mill-head onto said screen and adapted to feed the crushed product of said mill-head onto said screen, a spout arranged to catch the oversize product of said screen and convey it to said mill-heads feed-inlet, and means including spouts for conveying the screened ore product away from said screen and mill.

10. In an ore crushing and screening mill, the combination of the supporting-frame, the ore-crushing mill, and the reciprocating screen, with the ore-feed hopper secured to said frame above said screen, the feed-pan below said hopper, resting at its discharge end on one end of said screen, a shaft secured to said frame, a rock-arm pivotally mounted on said shaft and arranged to support at its upper end the opposite end of said feed-pan, and having its opposite end connected to said frame, with an adjustable reciprocative resilient connection, and means for imparting a reciprocating movement to said screen, whereby the said reciprocative movement of said screen is imparted to the discharging end of said ore-feeding pan.

11. In an ore crushing and screening mill, the combination with the supporting-frame and the ore-crushing mill, having an orefeed inlet and feed-spout, and a dischargeoutlet and a crushed-ore collecting and discharging spout, of the screen pan, and screen, swinging shafts at the opposite ends of said screen-pan, the arms and shafts pivotally arranged to support said swinging shafts and said screenpan, the eccentric and surrounding arm connected to one of said swinging shafts, and arranged to reciprocate said screenpan, the ore-feeding hopper secured to said frame, the feed-pan arranged to receive ore from said hopper and discharge it on said screen, a gate connected to said hopper and extending into said feed-pan, means for adjusting said gate, means connected with said screen-pan and with said frame for imparting a vibratory motion to said feed-pan, means for conveying the screened-ore product from said screen, means for discharging the oversize screen ore into said ore-crushing mills feedinlet spout, and for discharging the crushed ore of said mill from said mills collecting and discharging spout onto said screen.

12. In an ore crushing and screening mill, the combination with a suitable supportingframe, of an ore-crushing mill rotatably journaled therein, a reciprocating screen mounted on said frame adjacent to said mill, means for feeding ore to said screen, means for feeding the oversize of said screen to said ore-crushing mill, means for feeding the crushed-ore product of said ore-crushing mill to said screen, means for conveying the screened product of said screen away from said screen. and mill, and means for feeding any suitable fluid into said ore-crushing mill.

13. in an ore crushing'and screening mill, the combination of the supporting-frame, the mill-head, a vertical ore-crushing diering carried by said mill-head, and crushingroller rotatably mounted in said frame, having an ore-feeding inlet and a crushed-ore discharge-outlet, said outlet comprising a spout having oppositely-flaring wing or side portions extending on each side of its central portion at an upward and outward angle, and arranged and adapted to be secured to said discharge-outlet, within the inner periphery of said diering, water-sup ply pipe connected to a supply of water under pressure extending into said mill above said discharge-spout, having a waterdischarging nozzle arranged to deliver a supply of water under pressure against the inner periphery of said die-ring, above said discharge-spout, and at a point that will permit said water and any crushed ore that may adhere to said die-ring to drop into said discharge-spout, and thereby be conveyed out of said mill, a watersupply pipe arranged to discharge a supply of water into said feeding-inlet, and a suitable screen in operative relation to said die-ring mill and arranged to receive and screen the crushedore product and to return the oversize to the feeding-inlet, and suitable means for conveying said screenings product away from said mill.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH ALGERT.

i/Vitnesses:

V. BENJAMIN GRIMEs, WALTER S. KENT. 

